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1990 325i idle control valve problem

 
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smithpatrick



Joined: 05 Nov 2007
Posts: 44
Location: Southern New Jersey
PostPosted: Thu Oct 15, 2009 8:28 pm    Post subject: 1990 325i idle control valve problem Reply with quote
1st new throttle position switch
2nd idle control valve does function and vibrate.
3rd checked the function of the switch at the dme also verified the wire for the idle control valve.
Heres' the problem the measured voltage on one side if the idle control is 9 or 10 volts, the other side is 5 volts. this forces the control valve to be closed all the time. It doesn't respond to idle commands when the throttle position switch is closed. no idle at all.
Bentley says to beware the temperature sensor
I'm thinking it may be the dme, but the car runs fine
1990 325i 5 speed
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5 e30's 84, 87, 3 90's
4 Boxer motorcycles R75/5, 2 R60/6, and a R90/6
1995 e36 320i auto euro specs from canada, 98 323i auto
2001 e46 325i manual
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idanity



Joined: 21 May 2005
Posts: 3097
Location: N.W.U.S.A.
PostPosted: Fri Feb 19, 2010 6:03 am    Post subject: Re: 1990 325i idle control valve problem Reply with quote
smithpatrick wrote:
1st new throttle position switch
2nd idle control valve does function and vibrate.
3rd checked the function of the switch at the dme also verified the wire for the idle control valve.
Heres' the problem the measured voltage on one side if the idle control is 9 or 10 volts, the other side is 5 volts. this forces the control valve to be closed all the time. It doesn't respond to idle commands when the throttle position switch is closed. no idle at all.
Bentley says to beware the temperature sensor
I'm thinking it may be the dme, but the car runs fine
1990 325i 5 speed



i recomend to deletethis mesege and post it in another room/ e30, e36, etc..
this is a place to post pix of your bmw.
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